Hello,
UNC (uncirculated), BU (Brilliant uncirculated). Basically difference is in storing coins. Then mint struck coins, they use mashines to count them and other processing, of course coins hitting one another, but they still uncirculated. If right after minting coins have been stored safely, (like in plastic/cardboard holder) they are brilliant uncirculated.
Regards, Tomas
Edited
8 years ago
